Driving and stopping mechanism



Sept. 1, 192's. 1,552,018

L. E; TOPHAM muvms' AND STOPPING macrmmsu ed April 9, 191'! sSheets-Sheet 1 ITDVETUt/CJT'" L E. TOPHAM DRIVING AND STOPPING MECHANISMOri inal Filed April 9 7 6 Sheets-Sheet 2 Sept. 1, 1925.

L. E; TQPH'AM DRIVINGAND STOPPING HECHANIS I' e sheets sneet a l'nventovSept 1, 1925. 1,552,018

L. E. TOPHAM I DRIVING AND STOPPJNG MECHANISM 011mm Filed April 9, 19176 Sheets-Shet 4 Z Z #5775 55 rvvez tar Sept. 1, 1925.-

L. E. TOPHAM DRIVING AND STOPPING MECHANISM Original Filed April 9, 19176 Sheets-Sheet 5 Patented Sept. 1, 1925.

UNITED :STATES' LAURENCE E. TOPHAM, or swnivrrscorr MASSACHUSETTS,ASSIGNO'R To UNITED SHOE MACHINERY CORPORATION, OF IPATER SON, NEWJERSEY, A CORPORATION'OF NEW JERSEY.

DRIVING AND STOPPING MECHANISM.

Original application filed April 9, 1917, Serial No. 160,751. Divided.and this application filed January 17,

1920. Serial No. 352,069.

To all whom it may concern:

Be it known that I, LAURENCE E. TOPHAM, a citizen of the United States,residing at Swampscott, in the county of Essex and State ofMassachusetts, have invented certain new and useful Improvements inDriving and Stopping Mechanisms; and I do hereby declare the followingto be a full, clear, and exact description of the invention, such aswill enable others skilled in the art to which it appertains to make anduse the same.

The presentinvention relates to driving and stopping mechanisms, andmore particularly to driving and stopping mechanisms adapted for use inhigh-speed machines.

The objects of the invention are to improve the construction and mode ofoperation of driving and stopping mechanisms. and to produce a novel andimproved mechanism which will act in a uniform and reliable manner tobring the parts of the machine to rest at a predetermined point in acycle of operations without undue shock, jar or vibration, and withoutsubjecting the parts to excessive strain.

The invention as illustrated in the present application is embodied in adriving and stopping mechanism comprising high speed driving mechanismfor the driven shaft and low speed driving mechanism which is throwninto operation just before the shaft is to be stopped, and an importantfeature of the invention consists in the provision of mechanism arrangedto operate during any rotation of the driven shaft for disconnecting thehigh speed driving mechanism from the shaft and for connecting the lowspeed driv ing mechanism with the shaft at a predetermined point in therotation of the shaft. This feature insures greater certainty andreliability in the operation of the stopping devices and results inuniform conditions when the low speed mechanism is connected with theshaft so that the stopping devices will act uniformly during eachoperation thereof.

The invention also comprises various other novel and improved featuresset forth in the following description and particularly pointed out inthe claims, the advantages secured. by which will be readil derstood andappreciated by those skilled in the art.

The invention as illustrated in'the present application is embodied in adriving and stopping mechanism designed to be applied to an automaticshoe machine such as that'illustrated and described in applicantspending application, Ser. No. 160,751, filed April 9, 1917, of which thepresentap plication constitutes a division. It is to'be understood,however, that the invention is not limited in its application to anyparticular class or type of machines but that it maybe applied withadvantage to various machines;

. In the drawings Figure 1 is a view-in vertical section of a machineembodying the invention, the section being taken substantially on line11 of Fig. 3; Fig. 2 is a. view in horizontal section, takensubstantially on the line 22 of Fig. 3; Fig. 3 is a view in frontelevation, partly broken away and partly in section; Fig. 4 is a detailview in front elevation illustrating certain parts of the stoppingmechanism; Fig. 5 is a plan view of the mechanism illustrated in Fig. 4;Fig. 6 is a detail view in rear elevation illustratingcertain parts ofthe stopping mechanism; Fig. 7 is a sectional View taken 'substantiallyon the line 77 of Fig. 6; Fig. 8 is a detail view in front elevation,partly in section, illustrating certain parts of the stopping mechanism;Fig. 9 is a sectional view taken substantially on the line 99 of Fig. 8,and Figs. 10 and '11 are detail sectional views inside and frontelevation illustrating particularly the lock bolt car-" rier and thecooperating cam actuated arm of the stopping mechanism. 7 a

The driving mechanism illustrated in the drawing comprises a drivingshaft 6- upon which is fixed a disk 8 carrying a driving member 10 of afriction clutch. The driven member 12 of the clutch is carried by aflange extending outwardly from a sleeve 14 loosely mounted upon thedriving shaft 6. The sleeve 14 also carries a spiral gear 16 meshingwith a spirallgear 18 formed on a sleeve 20 that is mounted on thedriven shaft 22 to rotate therewith. While the members 10 and 12 of themainfriction driving lUU through the spiral gears 16 and 18 at a speeddepending upon the speedof the driving shaft 6. In stopping the rotationof the shaft 22 the members 10 and 12 of the main driving clutch aredisengaged and the shaft '22 isstopped'through the action ofautomatically acting devices. The mechanism for stopping the shaftcomprises a slowspeed friction clutch which is thrown into operationautomatically upon the disengagement of the maindriving clutch and thenacts first as a frictionbralre to slow down. the speed of the shaft 22to the speed of the driving member of the clutch, andthen to drive theshaft 22 in a forward direction at slow'speed to stopping position.W'henthe shaft 22 arrives at stopping position therotation of the shaftis arrested-by a friction brake.

To enable the members of th-e main driving clutch to be engaged-anddisengaged. the sleeve 14' which carries'tl'ie'driven memberof theclutch'is arranged-to slide longitudinally-of the shaft 6 upon which itis mounted. *Thespiral gearalfi is'formed with QtCYllllClIlCill IQCGSS,as shown in Fig. 1, the upper face of whichis engaged by a ball thrustbearing 24 interposed between said face-'and the upper end of a sleeve'26 forming abearingfor one end ofthe shaft 6. The sleeve "26 is'mounted in a bearing on the frame to slide longitudinally of the shaft andthe upper end of the s-leeve 26 is formed with a flange 28 which-isadapted to an inwardly projecting flange30 on a-collar 32 threa'dedintothe recess'in' the spiral gear 16. The sleeve '26 is "moved upwardly bythe operator upon starting the machine to actuatethe-sleeve l l'toengage the inemb-rs of the maindriving clutch, and is automaticallymoved downwardly upon stopping the machine, During the downward movementofthe sleeve-26, the flange 28 'on'the sleeve engages the'l'iange 8Oon'the collar 32, and movesthe sleeve 14c downwardly to disengage 'themembers of 'the'main driving clutch.

The collar 32 provides an adpistable con nection'between the sleeve 26and the sleeve 14. To enable the collar to be turnedreadily to adjustthe same inthe recess in-the spiral gear ltl, the collar is formed witha-series of openings 3 lin which may be inserted any suitable tool'forturning the collar. The collar, when adjusted, is'held in adjustcdposition by means of a pin 36 mounted in j the spiral gear, the lowerend of which is "ad'apte'dto engage in any one of a series of recesses38in the collar. The pin is acted upon by a spring 40 attached to thespiral gear and bearing upon the-head of the pin, which holds the lowerend of the pin-in engagement with the recess in the collar. I

The mechanism by which the sleeve 26 is actuated to cause the engagementand di enga gcment of the main driving clutch,

comprises a disk 42 carried at one end of, and preferably formed:integral with a sleeve 44 mounted in a-bea-ring 4:6 in the frame of themachine, said disk having a series of teeth 48 meshing with a series ofteeth 5O formed on the exterior of the sleeve26fi'To the opposite end'ofthe sleeve't l is clamped an arm 52 to the outer end ofwhicl isconnected, bynmeans of a stud 5a, a hollow cylinder 56. Through thiscylinder passes a rod 58-pivota-llyconnected atone end by a stud60v tothe arm 62 of a lever 64 keyed to one end of a shaft 66 mounted to turnin the sleeve 44L. Surrounding"therod 58 within the cylinder 56 is adoiled spring-68 which at its lower end engages the 'loweren'd wall ofvthe cylinder-andat its upper end acts against a collar 70 held by a stopnut T2 upon'the rod,- the 'collar'be'ing arranged to slide in theupper'end of the cylinder. Th s sprin g furnishes a I yieldingconnection between the arm 52 and'the lever 64. Upon the opposite end.of the shaft 6'8 is mounted a lock-bolt carrier 'i' l formed with a'dovetailed guide in which is mounted adore tailed slide 76.: The slideis yieldingly held in elevated position in thecarrier T l by a coiledspring 78 attached at its upper end to a pin 80 secured'inthe carrierand at its lower end to a pin 82 secured'm the slide. Projectingforwardly from the slide 7'6 IS a stud 84 carrying a. roll 86 whichengages in an irregularly shaped slot 88 formed in a bracket 90securedto the: frame of the machine. This roll also engages in anirregu- 'larly shaped slot 92 'formed'in an pivoted upon a stud 9'6projectingfrom a lever 98. The lever 98 is provided with a pivot stud orshaft-100 mounted inlbearings in the frame'of the machine, and isnormally held in elevated position by means at a coiledspring 1O2attached at its lower end to a pin projecting from a stud 104 formedintegral with the lever 98, and at'its upper end to a pin 106mo-unted onthe frameof themachine. The'lever '98 is provided with an operating arm108 terminating in a handle. In starting the machine, the op-- eratorseizes the handle of the operating arm 1'08 and swings the lever 98downwardly from the position shown in Fig. 3 to that shown 'in Fig. 4.The arm' 94L, through its engagement with the roll 86, depresses theroll and the slide 6 upon which it is carried, the roll movingdownwardly through theslot 88 in the bracket 90, which acts as a guidefor the roll. The

lower end of the carrier 74 will thus be swung to the left, Figs. 3 and4, in starting the machine, and through the connection between thecarrier and the disk 42 the dish will be turned in a'direction toelevate the sleeve 26 to engage'the members of the main driving clutch.hen the sleeve 26 has been elevated by the movement of the carriersufficiently to engage the members of the clutch, the spring 68 willyield during the 'continuedmovement of the carrier, and the members ofthe clutch will be held yieldingly in engagement through the action ofthe spring. In order to retainthe members of the main driving clutch inengagement until the sewing of the shoe is completed, a latch is fixedto a stud 112 mounted to turn in a bearing in the lower end of thecarrier 74, and is arranged to be engaged with the end of a holdingcatch 114 fixed to a stud 116 mounted to turn in a bearing in the frameof the machine. The catch is held in acting position by means of acoiled spring 118. As the lower end of the carrier 74 is swung to theleft upon starting the machine,

the acting end of the catch 114 snaps in front of the end of the latch110 into position to hold the end-of the carrier from moving back to theright. WVhen the carrier is thus latched in position, the handle of thearm 108 is released by the operator, and the lever 98 is elevated by theact-ion of the spring 102 to its initial position. In stopping therotation of the shaft 22 the latch 110 is thrown out of engagement withthe catch 114, allowing the lower end of the carrier to be returnedtowards its right-hand position. As the carrier is released, the spring78 elevates the slide 76, and through the engagement of the roll 86 withthe edge of the slot 88, the lower end of the carrier is swung back tothe right. By this movement'of the carrier the sleeve 26 is depressed.There is a certain amount of lostmotion between the sleeve 26 and thecollar 32, and the movement of the sleeve, caused by the swingingmovement of the carrier under the action of the coiled spring 78, is notsuflicient to disengage the members of the main driving clutch, whichare subsequently disengaged at a predetermined point in the rotation ofthe shaft 22 by mechanism hereinafter described. 1

The latch 110 may be thrown out of engagement with the catch 114automatically to stop the shaft 22 during any rotation of the shaft uponthe occurrence of a defect in the operation of the machine in which thedriving and stopping mechanism is embodied or upon the completion of theoperation performed by the machine or the latch may be disengaged fromthe catch manually at any time by a manipulation of the catch. I

The machine is provided with devices which act when the main drivingclutch is disengaged to slow down the speed of the shaft 22, and tocause the shaft to. stop in a predetermined position. The mechanism forslowing down and finally stopping the shaft 22 of the machine comprisesa slowspeed friction clutch which is disengaged While the machine isdriven through the main driving clutch, and is engaged when the 'maindriving clutch is disengaged. This slow-speed clutch when engaged firstacts as a friction brake to slow down the speed of the shaft 22 to thespeed of the driving member of the slow-speed clutch, and then as adrivingclutch to drive the shaft 22 forward to stopping position. Theslow-speed clutch comprises driving and driven friction clutch membersand 122, mounted on the shaft 22. The driving member 120 of the clutchis journaled upon a sleeve 124 secured by means of a. washer 126 and abolt 128 to a reduced portion of the shaft 22 to. rotate with the shaft.The clutch member 120 is driven by means of a bevel gear 130 meshingwith a bevel gear 132 I formedon the clutch member. The gear 130 ismounted upon the lower end of a sleeve 134 journaled upon a shaft 136secured at its upper end in the frame. Mounted upon the upper endof thesleeve 134 is a gear 138 which meshes with a gear, 140 formed 'on thedisk 8 which carries the driving member 10 of the main driving clutch.The gears 132 and 130, and 138 and 140, are so proportioned that theclutch member 120 is rotated at slow speed'as compared with the speed ofrotation of the driving member of the main driving clutch. The drivenclutch member 122 of the slow-speed clutch is secured to the sleeve 20which is mounted upon the shaft 22 to rotate with the shaft, but ismovable longitudinally of the shaft to carry the driven memberof theclutch into and out of engagement with the driving clutch member. Thesleeve is secured to rotate with the shaft by means of a bolt 144-threaded into the sleeve, and engaging in a slot- 146 in a flange 148 onthe sleeve 124. The clutch members are normally held out of engagementby means of a coiled spring 150 seated at one end in a recess in theflange 148 on the sleeve 124, and at its other end in a recess in thesleeve 20. The movement of the sleeve 20 under the action of the springis limited by the engagement of the stop nut 152 mounted on the endofthe bolt 144 with the flange 148.

The mechanism for controlling the engagement and disengagement of theslow-' speed clutch comprises a cam groove 154- formed in the sleeve 20,in which engages a cam roll 156 mounted on the upper end of an arm 158secured to one end of a shaft 160 mounted to turn in a sleeve 162engaging in a bearing 164 on the frame of the machine. During the'normal operation, or while the main driving clutch ofth-e machine is egaged to drive the machine, the arm 158 is oscillated idly by the camgroove 154 and cam roll 156. When the main driving clutch is disengaged,the carrier 74 is locked to'the arm 158 by means ofv a locking boltconsist-- ing of a projection 166 formed on the upper end of'the slide76,"which is adapted to engage in a recess 168 formed in a lateralprojection'17O on the arm158. hen the main driving clutch is engaged,the slide 7 6 then "being'held in lowered position, the projection' 'l66is disengaged from the recess 168. VVhenthe latch 110 is disengaged fromthe "catch 114 and the slide '16 iselevated by the action of the coiledspring 7 8, as the arm-158 "reaches acertain point in its oscillatingmovement, the locking projection 166 envgages in the recess 168 to lockthe lock-bolt car'rier'i l' to the arm. Thelower'end of the carrier isad-apted to be engaged by a springpressed plunger 172 mounted to slidein a suitable guideway in the bracket 90. The plunger is attached to oneend of a rod 17 1, and is actedupon by "a coiled spring 176 surroundingthe rod 174i and interposed between the plunger and one end of theguide- Way in which the plunger is mounted. The movement of the plungerunder the action of the coiled spring1 76'is limited by the engagem-entwith the" end of the bracket 90 of 1 a stop nut 1'? 8 threaded on theend of the rod, lVhen'the carrier 74E is released, the slide 7 6 risesand the lower end of the carrier swings to the right under the influenceof: the spring 7 8, until, before the roll '86 reaches the upper end ofthe slot 88 the swinging movement of the carrier is yield- "inglylimited by its engagement with the plunger 172, the roll finallyresting'in a recess 180 with which the slot is formed. The upwardmovement of the slide 76 projects the locking bolt 166 into engagementwith the recess 168 in the'arm 158 to lock the carrieri'M to said arm.Fig. 8 shows substantially the positions of the parts thus'far describedat this point'in the stopping operation., The locking projection 166 onthe slide 76 engages in the-recess 168m the pro jection 170 onthe arm158 to lock the arm to the carrier 7e when the cam roll 156 is locatedin the right-hand idle portion of the cam groove 154:,as shown in Fig.3. The continued rotation of the sleeve 20 brings the inclined portionofthe cam groove 154 leading from the right-hand idle portion'or" thegroove to the leithand idle portion of 'the groove into engagement withthe roll "156. Through the cooperative'action of the cam roll andthe-cam groove during the en- 'gagement'of the roll in this inclinedportion of the cam groove, the sleeve 20 is shifted longitudinally ofthe shaft 22 to the right, Fig. 2,-to engage the memher's'of theslowspeed clutch, and the carrier 74: is swung on its axis in adirection'to carry the lower end thereof farther'to the right from theposition shown in Fig. 3. By this movement of the carrier'the sleeve'26is depressed to dis engage the members of the main driving clutch. Thedisengagement of the members of the'main clutch and the engagement ofthe members of thes'lo'w-speed clutch are thus effected at apredetermined point in the rotation'of the drivenshait 22. This movementof the carrier occurs aga'instthe tension exerted by the spring 17 6 onthe plunger 172', and after the cam'roll'lea'ves the inclined portionofthe camgr'oo'v'e, and is engaged in the right-hand idle portio'nthereof, the members of'the slow-speed clutch are held in engagementwith a-pre ss'ure depending on the tension of this spring. After themembers of the slow-speed clutch are enerative action (it the cam'groove154: and the cam roll 156, the carrier 74 is fir'st swung in a directionto carry th-e'lower end thereof to the left, after which the sleeve 20is moved longitudinally ot'the-shaft 22 'to the left to disengage thedriven member of the slowspeed clutch "from the driving clutch'member.

The swinging movement ofthe carrier 7 4 thus produced actuates'thedevicesfor engaging the brake: The brake-actuating devicescomprise'alever 182 mounted onone end of or formed integral with thesleeve 1'62 andcarrying a latch arm 184 secured to a stud 186 mounted inthe left arm'of the lever,'sa-id latch arm being arranged to engage theleft side of a projection 188 on a pin 190 projecting "forwardly fromthe slide 76. The stud 186 is actedupon by a spring 192 which tends toswingthe'latch arm 184 rea'rwardly into position to be engaged by thepin 190. During the'n'orm'al operation of the machine, or whilethe slide76is held in lowered position, the pin 190 is locatedbelow the latch arm184i. As-the slide 76 rises under the'in'i'luence of the coiled spring78, upon'therelease'of the carrier 74,-to stop the machine, the lowerend of the carrier '74 does not swing to the right farenough to carrythe pm 190 beyond the end-of :the latch arm'184, but the pin risesbehind the latch arm and engages an inclined face'194 formed on the rearside ofthe end of the arm. Asthe lower end of the carrier is swungfarther -to' the right innnediately; after the engagement 'of'themembers of the slow-speed clutchfthe movement ofthe carrier carriestheprojection 188 on the pin 190 beyond the end of the arm 184, an'd thearm is then swung rearwardly into position to engage the left side ofthe projection.

en the lower end of the carrier .74 is swung back to the left, justbefore the disengagement of the slow-speed clutch, the lever 182 isswung to theleft with the carrier through the engagement of theprojection 188 with the end of the latch arm 184. This movement of thelever 182 effects the setting of the brake. The central portion or hubof the arm 184 is provided with an abutment face 196 for engagement withan arm 198 carried by a .brake actuating ring 200 surrounding the shaft22. The ring is pivoted upon an eccentric pin 202, and is formed withoppositely projecting lugs 204 which engage in recesses'206 in a brakedisk 208 carried by a sleeve 210 mounted onthe shaft 22 to slidelongitudinally of the shaft but held from rotation with the shaft. Thebrake disk and the sleeve are held from rotation with the shaft 22 bythe engagement of the lugs 204 on the ring 200 in the recesses 206 inthe brake disk. The brake disk 208 is provided with a facing of frictionmaterial 216 for engagement with a brake surface 218 formed on a'disk220 mounted on the shaft 22. The sleeve 210 is acted upon by a leafspring 222 interposed between one end of a bearing 224 and a ring orcollar 226 threaded upon the end of the sleeve, which spring 222normally holds the sleeve in position with the brake disk 208 out ofengagement with the disk 220. As the lever 182 is swung to the left bythe movement of the carrier 74, the abutmerit face 196 on the latch arm184 engages the arm 198 on the brake-actuating ring 200, and turns saidring about the eccentric pin 202 upon which itis pivoted, therebycausing the ring to move the brake disk 208 into engagement with thebrake surface 218 of the disk 220 to arrest the rotation of the shaft22. By the adjustment ofthe eccentric pin 202 upon which thebrake-actuating ring is pivoted, the position of said ring may beregulated so as to produce the required action between the members ofthe brake to stop the rotation of the shaft 22 quickly and,

efficiently at the predetermined point in the rotation of the shaft.

The operation of the various parts of the mechanism illustrated in thedrawings has been indicated in the preceding description but may bebriefly, summarized as follows Starting with the parts in the positionillustrated in Fig. '3, inwhich the shaft 22 and sleeve 20 are at rest,a depression of the handle 108 moves the arm 94 downwardly and throughits engagement with the roll 86 of the lock bolt carrier slide depressesthe slide and swings the lock bolt carrier into the position illustratedin Fig. 4. The

downward movement of the lock bolt slideremoves the pin 190 on the slidefrom engagement with the latch arm 184 and thus .sition illustrated inFig. 4 by releases the brake disk 208 from engagement 0 with the disk220 on the shaft 22. Theswinging movement of the lock boltcarrierrotates'the disk 42 so asto elevate the sleeve 1 wvise direction untilits lower end engages This movement of the the plunger 172. lock boltcarrier is not sufficient to disengage the members of the main drivingclutch. While the machine is running the arm 158 is beingoscillated idlyby the timing cam groove 154. After the lock bolt slideis raised by thespring? 8, the lockbolt is engaged by the arm 158 and during thecontinued oscillation of the arm the lock, bolt carrier is swung stillfurtherin a counter clockwise direction so as to disengage the maindriving clutch members. v Continued rotation of the sleeve 20 carryingthetiming cam groove 154 causes the sleeve to be forced toward theright, as indicated in Fig.

speed clutch. The slow speed clutch acts as a drag until the speed ofthe shaft 22 isreduced to that of the driving member of the slow speedclutch. Continued revolution of the sleeve 20 brings the shaft 22 tostopping thereby engaging the members of the slovs; v

position, at which point in the revolution c the sleeve 20 is moved tothe left, as viewed 7 in Fig. 3', to release the members of the slow Ispeed clutch and the lock bolt carrier is swung slightly in a clockwisedirection to apply the brake through the engagement of "the pin 190 withthe latch arm 184.

The nature and object of the invention having thus been explained, and amechanism embodying the invention in its preferred form having beendescribed, what is claimed is:

1. A driving and stopping mechanism having, in combination, a shaft,high and. low speed driving mechanisms therefor, and meansfor-disconnecting the high speed driving mechanism from the shaft andfor connecting the low speed driving mechanism with the shaft at apredetermined point in disconnecting the low speed driving mechanismfromthe shaft. 7 V

2. A driving and stopping mechanism having, in combination, a shaft,high and low speed driving mechanisms therefor, and means arranged tooperate during any rotation of the shaft for disconnecting the high therotation of the shaft and for thereafter speed driving mechanism frqmthezshaft. and for connecting the low speed driving mecha: nism, with, the;shaft at a predetermined point in therotation. of the shaft, andfordisconnecting the low speed driving. mechanism fromthe shaft at anotherpredetermined point in the rotation of the shaft 3. A driving andstopping mecha nism having, in combination, a shaft, high and low speeddriving mechanis ms' therefor, means arranged to operate dur ng. any;rotation of' the shaft for disconnecting the high speed driving,mechanism from the shaft and for connecting the low speed drivingmocha,- nis m with thev shaft, at

predetermined point in ;the rotation of'fthe shaft and for thereafterdisconnecting, the low speed drivingvmeohanism from the. shaft, andmeans for stopping the shaft ata predetermined point in its rotarymovementWhenthe 10W speed'driving mechanism has been disconn sted h erom 4-. A driving and-stopping meehanism having, in combination, ashaft, high and low speed driving mechanismstherefor, and means actuatedthrough, the high speed riv ng mechani m Wh ethe s af is cnnectedtherevvith for disconnecting theshaft from the high speeddrivingmechanism and connecting thegshaft .'With the low speed driving.mechanism.

5. A driving and stopping. mechanism having, combination, a shaft, highand low speed (driving mechanism therefor, means actuated by the drivenmechanism for disconnecting the high speed driving mechanism fromtlieshaft and means for connecting the low speed, driving mechanism there-With.. i

6; A driving, and stopping mechanism having, combination, .a. shaft,high and low speed driving mechanism therefor, and

, thereof, a driven clutch member mounted on the sleeve, a sleeve fixedtoithe second shaft. andslidable longitudinally thereof,

gearing connecting the'sleeves, a slow-speed driving clutch comprisingadriving olutch.

member loose onthesecondjshaft, a driven clutch member lIlQ'HIItQCl on,the second e, peed-reducing searing. c ecting thedrivlng, shaft, Withtheslow-speed. driv ing clutch member, means for movingfthe.

. fir t sl evete n es w nsas th l1ish1.=- speed driving clutch, andmeansfor mov ng the secondsleeve to =,e11gage the: slow-speed clutch upon thedisengagement ofthe high speed clutchand to disengage-the slow-speedflflclutch.

8. A driving and: stopping mechanism v.

having in combination, a driving shaft, a dr ven. shaft arrangedtransversely to -the dr1v1ng;shaft,.a high-speed drlving clutchfondriving the driven shaft from the driis ing, shaft comp-rising adriving, clutch memberfived to the driving shaft, a sleeve loosemounted, on. thejsleeve, a sleeye fi'XGCl to the driven shaft andslidable longitudinally.

on the driving shaft and sliclableilongitudi1,-

nally ,thereof, a ,driven; clutch member. 89;

,; thereof, gearing connecting-the sleeves, a

slow-speeddriving clutch comprising a drive,

second; sleeve, speed-reducing gearing con,- necting the driving. shaftW1th .th e. slowspeed. dr ving-clutch member,;means.nnder [control oftheoperatorfor moving theofirst,

ingelutchmember loose on thesecond shaft, 5' a ,driven clutch. member.mounted on the,

- sleeve to en age the high-speed driving clutch to startfthe machine,and means o-per ated through the high-speed clutch for movingthafirstsleeve to disengage the high speed clutch and for moving thesecond sleeve .to engage theslow-speed clutch upon thefldisengagement ofthe, high-speed clutch V and operated ,through the. slow speed clutch vto disengage the slow speed .cltitc 9. A driving and stoppingv mechanismhaving, in combination, a. driven shaft, a highspeed- .friction.driving, clutch. for driv- -ing theshaftcomprising driving and driven.

cluteh, members, one of which is mounted, for movement to engage anddisengage thei clutch, a slow-speed friction. driv-' ing clutchcomprising drivinghand;driven 4 clutch, members, an j axially movablesleegve upon which thodriven member of the slow peed l tch-is mounted,.nie ns for, moving the -s lee3ve to engage and disengage the SlOW speedclutch comprising a cam carriedby the sleeve, a lever normallyoscillated idly by the 0am, a movable-'lock-bolt carrier, means actingon the carrier to resist move. ment of the carrier in one direction, alock bolt movably mounted in the carrier for locking the carrier to thelever to cause axial movements of the sleeve to engage and dis:

.engage the ;slowspeed clutch, means for.

actuating the'lock boltto lock the carrier. to i andv nnlock v it fromthe lever, and meq lls :for actuat ng the axially movable member.v

of theghigh speed clutch to engageand dis7 engage. t e h gh speed clutchfrom the movements of the locksbolt carrier.

10. A driving and stopping. mechanism high speed friction driving clutchfor ,driving the shaft. comprising driving and driven having, incombination, ,a driven shaft,,a

clntc'n members, one of which is mounted for axial movement to engageand disengage the clutch, a slow-speed friction driving clutchcomprising driving and driven clutch members, an axially movable sleeveupon which the driven member of the slow speed clutch is mounted, meansfor moving the sleeve to engage and disengage the slowspeed clutchcomprising a cam carried by the sleeve, a lever normally oscillated idlyby the cam, a pivoted lock-bolt carrier, means acting on the carrier toresist movement of the carrier in one direction, a lock bolt movablymounted in the carrier for locking the carrier to the lever to causeaxial movements of the sleeve to engage and disengage the slow speedclutch, means for swinging the carrier and projecting and withdrawingthe lock bolt to lock the carrier to and unlock it from the lever, andconnections for actuating the axially movable member of the high speedclutch to engage and disengage the high speed clutch from the swingingmovements of the lock-bolt carrier.

11. A machine having, in combination, a high-speed driving clutch, aslow-speed driving clutch, means for engaging and dis engaging thehigh-speed clutch, means for engaging the slow-speed clutch when the]high-speed clutch is thrown out, and for disengaging the slow-speedclutch when the shaft reaches stopping position, comprising a sleeveupon which the movable member of the slow speed clutch is mounted, a camcarried by the sleeve, a lever normally oscillated idly by the cam, amovable lock-bolt carrier, a lock bolt movably mounted in the carrierfor locking the carrier to the lever to cause the engagement anddisengagement of the clutch, a brake, and connections between thelock-bolt carrier and the brake for engaging the brake from the movementof the carrier as the slow-speed clutch is disengaged.

12. A driving and stopping mechanism having, in combination, a shaft, aclutch for driving the shaft, a sleeve fixed to the shaft andlongitudinally movable thereon and carrying the driven member of theclutch, means for controlling the engagement of the clutch comprising acam carried by the sleeve, a lever normally oscillated idly by the cam,a pivoted lock bolt carrier, a lock bolt slidably mounted in the carrierto lock the carrier to the lever and thereby effect longitudinalmovement of the sleeve on the shaft, and means for controlhng the pos1-tion of the lock bolt.

13. A driving and stopping mechanism having, in combination, a shaft, aclutch for driving the shaft, a sleeve fixed to the shaft andlongitudinally movable thereon and carrying the driven member of theclutch, means for controlling the engagement of the clutch comprising acam carried by the sleeve, a lever normally oscillated idly by the cam,a pivoted lock bolt carrier, a lock bolt slidably mounted in the carrierto lock the carrier to the lever and thereby effect longitudinalmovement of the sleeve on the shaft, means for controlling the positionof the lock bolt, a brake, and means actuated by the movement of thelock bolt carrier for engaging the brake.

let. A driving and stopping mechanism having, in combination, a shaft, aclutch for driving the shaft, a sleeve fixed to the shaft andlongitudinally movable thereon and carrying the driven member of theclutch, means for controlling the engagement of the clutch comprising acam carried by the sleeve, a lever normally oscillated idly by the cam,a lock bolt carrier, a lock bolt slidably mounted in theicarrier to lockthe carrier to the lever and thereby effect longitudinal movement of thesleeve on the shaft, means for controlling the position of the lockbolt, a brake independent of the sleeve, and means for engaging thebrake comprising a latch arranged to be moved into operating positionduring the movement of the carrier in one direction and'to be actuatedfrom the carrier during its return movement.

15. A driving and stopping mechanism having, in combination, a shaft,driving mechanism for the shaft, means for controlling the connection ofthe driving mecha' nism with the shaft comprising a cam, a

' member normally oscillated idly by the cam,

a normally stationary member, a coupling device for connecting saidmembers to render the clutch controlling means active,'a brake and meansfor engaging the brake comprising a latch arranged to be moved intooperating position during the movement of the latter member in onedirection and to be actuated from the latter member during its returnmovement.

LAURENCE E. TOPHAM.

